Tube-number record
DF 65
0 archive entries
DF 65 is a tube type in the TubeDatabase archive (class: A.F. Subminiature Pentode for hearing aids). Recorded specifications: brand Philips, construction Pentode, socket Subminiature, maximum plate voltage 45 V, and maximum plate dissipation 0.0015 W. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassA.F. Subminiature Pentode for hearing aids
BaseSubminiature
Construction
Primary TypePentode
EnvelopeSubminiature
SectionsSingle
Filament / Heater
MaterialDirect DC
Absolute Maximum Ratings
Plate Voltage45 V
Plate Dissipation0.0015 W
Grid 2 Voltage45 V
Grid 1 Voltage-0.2 V
Cathode Current0.075 mA
Audio Performance
Key Features
- Directly heated
- Subminiature construction
- Hearing aid optimized
- Series or parallel heating supply
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Characteristic | 22.5 V | 100 | 4000000 | 8.7 | 0.05 mA |
Datasheets
Datasheet: DF65.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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